WonderPlay— 斯坦福联合犹他大学推出的动态3D场景生成框架

What is WonderPlay?

wonderplay is a novel framework jointly developed by stanford university and the university of utah, capable of generating dynamic 3d scenes from a single image and user-defined actions. by combining physical simulation with video generation technology, it uses a physics solver to simulate rough 3d dynamics and then drives a video generator to synthesize more realistic videos, using the video to update the dynamic 3d scene, forming a closed loop of simulation and generation. wonderplay supports various physical materials (such as rigid bodies, fabrics, liquids, gases, etc.) and multiple actions (such as gravity, wind force, point force, etc.), allowing users to interact with the scene through simple operations and generate a wide variety of dynamic effects.

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Main Functions of WonderPlay

• Dynamic Scene Generation from Single Image: Generates dynamic 3D scenes from one image and user-defined actions, demonstrating the physical consequences of actions.
• Support for Multiple Materials: Covers various physical materials such as rigid bodies, fabrics, liquids, gases, elastic bodies, particles, etc., meeting diverse scene requirements.
• Action Response: Supports action inputs such as gravity, wind force, point force, etc., enabling users to intuitively operate and interact with the scene to generate different dynamic effects.
• Visual and Physical Realism: Combines the accuracy of physical simulation with the richness of video generation to create dynamic scenes that are both physically accurate and visually realistic.
• Interactive Experience: Equipped with an interactive viewer, users can freely explore the generated dynamic 3D scenes, enhancing immersion.

Technical Principles of WonderPlay

• Hybrid Generative Simulator: Integrates a physics solver and a video generator, using the physics solver to simulate rough 3D dynamics and driving the video generator to synthesize realistic videos, which are then used to update the dynamic 3D scene, forming a closed loop of simulation and generation.
• Spatially-Variant Dual-Modal Control: During the video generation stage, motion (flow field) and appearance (RGB) dual-modal signals are used to control the video generator, dynamically adjusting the generator's responsibilities based on the scene region to ensure the generated video is closer to the physical simulation results in terms of dynamics and appearance.
• 3D Scene Reconstruction: Reconstructs the background and objects from the input image separately; the background is represented by a fast layered Gaussian surface (FLAGS), while the objects are constructed as "topological Gaussian surfaces" with topological connectivity, estimating the material properties of the objects to provide a foundation for subsequent simulation and generation.

Project Address of WonderPlay

• Project Website: https://www.php.cn/link/988969200cb769535c9ff0ce49e36719
• arXiv Technical Paper: https://www.php.cn/link/9087fba46cda4f8063b397bf472f226c

Application Scenarios of WonderPlay

• AR/VR Scene Construction: Used to create immersive virtual environments, supporting dynamic interaction between users and scenes.
• Film and Television Special Effects Production: Quickly generates dynamic scene prototypes to assist in special effects production, enhancing visual effects.
• Education and Vocational Training: Simulates physical phenomena and working environments, enhancing the practicality of teaching and training.
• Game Development: Generates dynamic scenes and interactive effects, enhancing the realism and fun of games.
• Advertising and Marketing: Produces dynamic ad content, providing interactive experiences to enhance audience engagement.

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